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[paginated] Emit fallback images using FILTER_NEAREST.

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Fallback images should (in theory) be emitted at native resolution, so
disable filtering to avoid introducing potential artifacts into cairo's
ideal output.
This commit is contained in:
Chris Wilson 2008-09-29 21:12:53 +01:00
parent f03d3f9f7f
commit 2c53bdb82a
1 changed files with 8 additions and 5 deletions
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13
src/cairo-paginated-surface.c
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@ -252,7 +252,7 @@ _paint_fallback_image (cairo_paginated_surface_t *surface,
int x, y, width, height;
cairo_status_t status;
cairo_surface_t *image;
cairo_pattern_t *pattern;
cairo_surface_pattern_t pattern;
x = box->p1.x;
y = box->p1.y;
@ -270,15 +270,18 @@ _paint_fallback_image (cairo_paginated_surface_t *surface,
if (status)
goto CLEANUP_IMAGE;
pattern = cairo_pattern_create_for_surface (image);
_cairo_pattern_init_for_surface (&pattern, image);
cairo_matrix_init (&matrix, x_scale, 0, 0, y_scale, -x*x_scale, -y*y_scale);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_pattern_set_matrix (&pattern.base, &matrix);
/* the fallback should be rendered at native resolution, so disable
* filtering (if possible) to avoid introducing potential artifacts. */
pattern.base.filter = CAIRO_FILTER_NEAREST;
status = _cairo_surface_paint (surface->target,
CAIRO_OPERATOR_SOURCE,
pattern);
&pattern.base);
cairo_pattern_destroy (pattern);
_cairo_pattern_fini (&pattern.base);
CLEANUP_IMAGE:
cairo_surface_destroy (image);